mui中使用ajax实现登录功能

<div class="mui-content"  id="bg">
  <form id='login-form' class="mui-input-group" name="login">
    <div class="mui-input-row" id="put">
      <label>账号</label>
      <input id='account' type="text" class="mui-input-clear mui-input" placeholder="用户名/邮箱/手机号" name="username">
    </div>
    <div class="mui-input-row" id="put">
      <label>密码</label>
      <input id='password' type="password" class="mui-input-clear mui-input" placeholder="密码登录" name="password">
    </div>
  </form>
  <div class="mui-content-padded" id="login-box">
    <button id='login' class="mui-btn mui-btn-block mui-btn-danger" style="background-color: #007aff;border: 1px solid #007aff;">登录</button>
    <div id="des">
      <a id='reg'>注册账号</a>  
      <a id='forgetPassword'>忘记密码</a>
    </div>
  </div>
  <img src="images/login/air.png" id="air"/>
  <div class="mui-content-padded oauth-area" style="position: relative;top: 20rem;">
  </div>
</div>

<div class="mui-content"  id="bg">
  <form id='login-form' class="mui-input-group" name="login">
    <div class="mui-input-row" id="put">
      <label>账号</label>
      <input id='account' type="text" class="mui-input-clear mui-input" placeholder="用户名/邮箱/手机号" name="username">
    </div>
    <div class="mui-input-row" id="put">
      <label>密码</label>
      <input id='password' type="password" class="mui-input-clear mui-input" placeholder="密码登录" name="password">
    </div>
  </form>
  <div class="mui-content-padded" id="login-box">
    <button id='login' class="mui-btn mui-btn-block mui-btn-danger" style="background-color: #007aff;border: 1px solid #007aff;">登录</button>
    <div id="des">
      <a id='reg'>注册账号</a>  
      <a id='forgetPassword'>忘记密码</a>
    </div>
  </div>
  <img src="images/login/air.png" id="air"/>
  <div class="mui-content-padded oauth-area" style="position: relative;top: 20rem;">
  </div>
</div>

<?php
namespace app\mobile\controller;
use think\Controller;
use think\Db;
use think\Loader;
class User extends Controller
{
    public function login()
    {
        if(request()->isPost()){
            $data=input();
            $user=Db::name("student")->where("suser",$data["username"])->find();
            if ($user==null){
                return $this->success("username");
            }elseif ($user["spassword"]!=$data["password"]){
                return $this->success("password");
            }else{
                return $this->success("success",'',$user);
            }
        }
    }
}

<?php
namespace app\mobile\model;
use think\Model;
class User extends Model
{
    public function login($data){
        $user=db('user')->where('username',$data['username'])->find();
        if($user){
            if($user['password']==md5($data['password'])){
                return 1;
            }else{
                return 0;
            }
        }else{
            return -1;
        }
    }
}

<?php
namespace app\mobile\validate;
use think\Validate;
class User extends Validate
{
    protected $rule = [
        'username|用户名'    => 'require|max:30|unique:user',
        'password|密码'   => 'require|min:6|max:30',
    ];
    protected $message = [
    ];
    protected $scene = [
        'register'  =>  ['username','password'],
    ];
}